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WO2009115223A1 - Élément de liaison pour relier un enregistreur de valeurs de mesure à un système fluidique étanché - Google Patents

Élément de liaison pour relier un enregistreur de valeurs de mesure à un système fluidique étanché Download PDF

Info

Publication number
WO2009115223A1
WO2009115223A1 PCT/EP2009/001757 EP2009001757W WO2009115223A1 WO 2009115223 A1 WO2009115223 A1 WO 2009115223A1 EP 2009001757 W EP2009001757 W EP 2009001757W WO 2009115223 A1 WO2009115223 A1 WO 2009115223A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
system element
housing
wall
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2009/001757
Other languages
German (de)
English (en)
Inventor
Raymond Glocker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MHM Harzbecher Medizintechnik GmbH
Original Assignee
MHM Harzbecher Medizintechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MHM Harzbecher Medizintechnik GmbH filed Critical MHM Harzbecher Medizintechnik GmbH
Priority to US12/933,183 priority Critical patent/US8316706B2/en
Priority to AT09721683T priority patent/ATE511789T1/de
Priority to EP09721683A priority patent/EP2252202B1/fr
Publication of WO2009115223A1 publication Critical patent/WO2009115223A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0023—Fluidic connecting means for flowthrough systems having a flexible pressure transmitting element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge

Definitions

  • the invention relates to a system element for releasably sealed connection of a measuring transducer with a fluid system, with a measuring chamber through which the fluid system can be connected.
  • the measuring chamber is formed in a housing and a part of the wall of the measuring chamber is formed by a membrane that is substantially more flexible. as the remaining part of the wall of the measuring chamber wherein the adjoining the membrane part of the wall of the measuring chamber forms an outer wall with an edge on which the membrane rests, and the membrane has a circumferential bead, which is located on the measuring chamber facing side of the membrane is
  • the monitoring kit to be attached to the catheter consists of an unventilated infusion device for delivering infusion solutions to the patient, a rinsing system which ensures a continuous flushing rate of typically 3 ml / hr at the catheter tip to prevent thrombi occlusion, optionally with a special purpose rinse function and a pressure dome.
  • the pressure dome transmits the pressure signal via a flexible membrane to a reusable transducer (pressure sensor).
  • a pressure dome has hitherto been fastened with a screw or bayonet connection on such a transducer (see DE 42 19 888 A1, column 3, lines 28 to 30).
  • Dom systems are on the rise.
  • the valuable electronics, especially the pressure sensor, are housed in a special housing. Such a part is commonly referred to as a transducer.
  • One or more transducers are integrated in a special holding plate.
  • the retaining plate is secured by means of a clamping screw, e.g. attached to an IV pole. From the Transducem in the holding plate, the pressure measurement data are transmitted via one or more cables to the monitor.
  • Renk describes a Renkharm as particularly advantageous, the known disadvantages, in particular a rubbing relative movement between the partners to be connected the RenkENS.
  • the second space is provided with a single opening through which a fluid which can be introduced in the second space can be filled with e.g. an external pressure measuring device should be connected to measure about the pressure of the blood flowing through the first space.
  • WO 97/39679 describes a coupling of a type of pressure dome with a transducer, wherein the measuring chamber of the "pressure dome” is not closed by a membrane from the environment, but by an insulating gel.
  • the fluidity of the gel should allow air to be expelled between the pressure dome and the transducer through venting channels.
  • the pressure dome is fixedly connected to the housing portion of the transducer by welding (supra, col. 4, lines 60-67) so that placement with a disposable dome and a reusable transducer is not possible.
  • the liquid system should be filled with a slight overpressure to ensure contact of the two pressure-transmitting membranes and thus the usability of the system.
  • the membrane is mechanically applied to the housing of the transducer, thereby sealing the equalization port, so that only the liquid remaining in the measuring chamber of the transducer can attenuate signal transmission to a piezoelectric sensor.
  • the corresponding arrangement of the pressure measuring requires a tremendous amount of equipment, especially with regard to the displacement device for the sensor and the calibration of the sensor dependent on the travel distance, so that such a system due to the handling effort and the enormous costs for the clinical and laboratory everyday unsuitable is.
  • a so-called vacuum box in which in a solid metal can an elastic membrane is arranged, as essential to the invention, the formation of the membrane and an attachment to a plunger is described, so that the membrane rests on one side of the can during manufacture and perform biasing work on the plunger after biasing by a spring in response to the absolute air pressure with which the membrane is acted upon on one side, and in particular Depending on the bias of the spring while doing a considerable stroke.
  • this device is not intended to be permeable and due to the training and objectives entirely unsuitable for the measurement of pressures, especially in extracorporeal circuits.
  • a pressure display device that indicates upon reaching a certain predetermined pressure value by a visible under a transparent disc color change from green to red or vice versa and / or can actuate a push button an electrical switch or button.
  • a liquid is trapped in the space between a membrane and a measuring housing. If a limit pressure on the other side of the membrane, which corresponds to the evaporation point of the liquid falls below, the liquid evaporates and the membrane performs together with a plunger attached thereto, a sudden stroke, so that a push button or the like can be operated with the plunger.
  • a device for mechanical coupling of the connecting element with the transducer is provided, which is part of a releasable Einsp DrISSENS, which is formed by claw-shaped holding elements in the form of hooks for engagement in a corresponding groove or undercut of the transducer or an associated fastening device.
  • a disposable pressure dome with a three-way cock and a check valve is known.
  • the membrane is also provided with a circumferential bead which is inserted into a groove surrounding the measuring chamber on the outside.
  • the groove with the part of the membrane located therein is partially covered on the outside by an annular disc, which is welded or glued to the housing body of the pressure dome.
  • the pins rise approximately coaxially to the outer wall and the height of the pin is at least half the height of the recess relative to the edge of the outer wall, in particular, if the height of the Tenon is about 2/3 of the height of the recess relative to the edge of the outer wall.
  • an embodiment of the invention has been found, in which also a retaining ring is provided, which is the edge of the outer wall of the Enclosed measuring chamber and which is fixed relative to the housing, in particular, when the retaining ring covers at least the gaps between the pin.
  • a retaining ring is provided, which is the edge of the outer wall of the Enclosed measuring chamber and which is fixed relative to the housing, in particular, when the retaining ring covers at least the gaps between the pin.
  • Fig. 1 is a perspective view of a housing of a first
  • Fig. 6 is a sectional view of a system element according to the invention with a housing gem. Fig. 5 and assembled membrane;
  • FIGS. 7 and 8 show a sectional view of the system element with additional retaining ring from FIGS. 7 and 8;
  • Inlet and outlet have corresponding connections, for example in the form of a conical sealing seat 4, as seen for example in Figure 5, a Einklebnut or a other dense connection system customary in medical technology or bioprocess engineering.
  • the dimensioning of the terminals 4 may correspond to eg DIN 13090.
  • the terminals 4 may include, for example, lockable Luer-Lock connections with loose threaded part or with external full thread, as indicated for example in DIN 13 090 Part 2, or also
  • Appropriate diameters of inlet and outlet ports 3 are in the range of about 1 mm in the measurement with static liquid columns, for
  • the diameter can also be up to one inch, corresponding to over 25 mm.
  • a measuring chamber 6 is formed, which communicates with the inlet and outlet ports 3 in flow communication.
  • the housing 1 is particularly economical as a one-piece injection molded part, preferably made of a sterilizable plastic, for. As a polycarbonate produced.
  • a part of the wall of the measuring chamber 6 is formed by the elastic membrane 2 (shown in FIGS. 3 and 4), e.g. Example of an EPDM, a TPE, preferably from a TPE of the class SEBS or otherwise another suitable, resistant to the fluid provided in the fluid system, sterilizable and optionally physiologically harmless material.
  • the hooks 7 are formed by resilient extensions of the housing 1 and formed integrally with two each with a handle 8 in one piece. In this case, a total of four evenly distributed hooks 7 are provided. As a result, the system element can be assembled and disassembled blindly by squeezing the handles 8 with one hand.
  • FIGS. 13 and 14 there is furthermore a securing ring 18 provided as shown in Figure 11.
  • the locking ring 18 has a non-annular shape, but has two lying on a first axis 19 circular portions 21, the z. B. outside a corrugation for improved operation.
  • a portion 22 is arranged, in which the retaining ring is extended approximately rectangular.
  • locking recesses 23 are provided on the upper side on the locking ring.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • External Artificial Organs (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Pour améliorer la possibilité d'utilisation d'un élément de système pour assurer une liaison étanchée et amovible entre un enregistreur de valeurs de mesure et un système fluidique, comportant une chambre de mesure (6) pouvant être reliée au système fluidique en étant traversée par ce dernier, la chambre de mesure (6) étant formée dans un boîtier (1), et une partie de la paroi de la chambre de mesure (6) étant formée d'une membrane (2) qui est nettement plus élastique que le reste de la paroi de la chambre de mesure (6), la partie de la paroi de la chambre de mesure immédiatement contiguë à la membrane formant une paroi extérieure (9) comportant un bord (10) sur lequel s'appuie la membrane (2), et la membrane (2) comprenant un renflement périphérique (11), qui se trouve sur la face de la membrane (2) tournée vers la chambre de mesure (6), il est proposé que le renflement (11) entre en prise avec un épaulement (12) formé dans le boîtier (1) autour de la paroi extérieure (9), épaulement qui court autour de la chambre de mesure (6), des tenons (13), dépassant de la paroi extérieure (9), étant disposés dans la zone de l'épaulement (12), et des trous (14) étant prévus dans le renflement (11) de la membrane (2) de façon que les tenons (13) pénètrent dans les trous (13) aménagés dans le renflement (11) de la membrane (2).
PCT/EP2009/001757 2008-03-20 2009-03-12 Élément de liaison pour relier un enregistreur de valeurs de mesure à un système fluidique étanché Ceased WO2009115223A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/933,183 US8316706B2 (en) 2008-03-20 2009-03-12 Connecting element for connecting a measurement recorder to a sealed fluid system
AT09721683T ATE511789T1 (de) 2008-03-20 2009-03-12 Verbindungselement zur verbindung eines messwertaufnehmers mit einem abgedichteten fluidsystem
EP09721683A EP2252202B1 (fr) 2008-03-20 2009-03-12 Element de liaison pour relier un enregistreur de valeurs de mesure a un systeme fluidique etanche

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008015322A DE102008015322A1 (de) 2008-03-20 2008-03-20 Verbindungselement zur Verbindung eines Meßwertaufnehmers mit einem abgedichteten Fluidsystem
DE102008015322.2 2008-03-20

Publications (1)

Publication Number Publication Date
WO2009115223A1 true WO2009115223A1 (fr) 2009-09-24

Family

ID=40809834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001757 Ceased WO2009115223A1 (fr) 2008-03-20 2009-03-12 Élément de liaison pour relier un enregistreur de valeurs de mesure à un système fluidique étanché

Country Status (5)

Country Link
US (1) US8316706B2 (fr)
EP (1) EP2252202B1 (fr)
AT (1) ATE511789T1 (fr)
DE (1) DE102008015322A1 (fr)
WO (1) WO2009115223A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020020480A1 (fr) 2018-07-27 2020-01-30 EMKA Medical GmbH Dispositif de détection de pression pour application médicale in vivo
WO2025191048A1 (fr) 2024-03-12 2025-09-18 EMKA Medical GmbH Système et procédé de détermination et de surveillance de paramètres cardiologiques

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010051644B4 (de) * 2010-11-17 2014-07-03 Baumer Innotec Ag Drucksensor mit Keramikzelle
US9191340B2 (en) 2011-03-02 2015-11-17 Blackbird Technology Holdings, Inc. Method and apparatus for dynamic media access control in a multiple access system
DE102012204709A1 (de) * 2011-03-25 2012-09-27 Meissner Filtration Products Inc. Druckmessanschluss mit thermoplastisch elastomerischer Grenzfläche
DE102013102085A1 (de) 2013-03-04 2014-09-04 Andromeda Medizinische Systeme Gmbh Vorrichtung zur Druckmessung in einem Fluid
DE102013015218A1 (de) * 2013-09-13 2015-03-19 Hella Kgaa Hueck & Co. Gassensor und Kraftfahrzeug mit einem Gassensor
JP2016133391A (ja) * 2015-01-19 2016-07-25 株式会社テージーケー 圧力センサモジュール及び圧力センサモジュールの製造方法
DE202015103406U1 (de) * 2015-06-29 2015-07-15 Sartorius Stedim Biotech Gmbh Verbindungssystem
JP6857095B2 (ja) * 2017-07-05 2021-04-14 サーパス工業株式会社 圧力検出装置
CN107519552B (zh) * 2017-08-22 2020-12-01 邱爱燕 防浮肿输液器
FR3081672B1 (fr) * 2018-05-22 2021-04-09 A Raymond Et Cie Boitier de protection d'un dispositif electronique
CN115620425B (zh) * 2022-12-08 2023-04-28 湖南高至科技有限公司 高过载飞行器记录仪

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109535A (en) * 1974-11-25 1978-08-29 Ametek, Inc. Diaphragm seal for pressure sensing instrument
US4163964A (en) * 1977-03-21 1979-08-07 Texas Instruments Incorporated Pneumatic or hydraulic pressure sensors with several thresholds of response
US4462409A (en) 1981-05-15 1984-07-31 Healthdyne, Inc. Pressure transducer dome
US4562845A (en) 1979-05-03 1986-01-07 The University Of Arizona Foundation Methods and apparatus for testing a blood pressure monitoring system of the hydraulic type
WO1997039679A1 (fr) 1996-04-18 1997-10-30 Sunscope International, Inc. Capteur de pression a coupole jetable
WO2002003854A2 (fr) * 2000-07-08 2002-01-17 Mhm Harzbecher Medizintechnik Gmbh Elements de systeme pour mesurer la pression dans des cycles extracorporels
US20030200812A1 (en) * 2002-04-30 2003-10-30 David Kuhn Apparatus and method for sealing pressure sensor membranes
US20040135666A1 (en) * 2003-01-09 2004-07-15 Kurtz Anthony D. Pressure sensor header having an integrated isolation diaphragm

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GB1335255A (en) 1970-06-19 1973-10-24 Alfa Romeo Spa Fluid pressure responsive device
US4185641A (en) 1978-08-23 1980-01-29 Hewlett-Packard Company Pressure dome
DE3525536A1 (de) 1985-07-17 1987-01-29 Berg Extrakorp Syst Medtech Verfahren zur herstellung eines druckuebertragenden kontaktes zwischen der membran eines druckdomes und dem druckuebertrager eines messwandlers und druckmessvorrichtung zur ermittlung des physiologischen druckes von fluiden des menschlichen oder tierischen koerpers
US4920972A (en) 1987-01-27 1990-05-01 Medex, Inc. Gel-filled blood pressure transducer
SE464913B (sv) 1988-03-03 1991-07-01 Gambro Ab Anordning foer tryckoeverfoering
DE4219888C2 (de) 1992-06-17 2003-01-02 Storz Endoskop Gmbh Schaffhaus Medizinischer Druckwandler
DE9317751U1 (de) 1993-11-19 1994-01-27 Brey Engineering, 87616 Marktoberdorf Druckanzeigegerät
DE4419593A1 (de) 1994-06-03 1995-12-07 Fresenius Ag Vorrichtung zum Messen des Drucks eines Mediums
FR2724321A1 (fr) 1994-09-14 1996-03-15 Hospal Ind Dispositif de mesure de la pression d'un liquide et procede de reglage d'un tel dispositif
US5551300A (en) 1995-12-18 1996-09-03 Abbott Laboratories User-restricted passage in reusable portion of device for monitoring a physiological pressure
DE19802615A1 (de) 1998-01-24 1999-08-12 Manfred Adolfs Verbindungselement zur Verbindung eines Meßwertaufnehmers mit einem abgedichteten Fluidsystem

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109535A (en) * 1974-11-25 1978-08-29 Ametek, Inc. Diaphragm seal for pressure sensing instrument
US4163964A (en) * 1977-03-21 1979-08-07 Texas Instruments Incorporated Pneumatic or hydraulic pressure sensors with several thresholds of response
US4562845A (en) 1979-05-03 1986-01-07 The University Of Arizona Foundation Methods and apparatus for testing a blood pressure monitoring system of the hydraulic type
US4462409A (en) 1981-05-15 1984-07-31 Healthdyne, Inc. Pressure transducer dome
WO1997039679A1 (fr) 1996-04-18 1997-10-30 Sunscope International, Inc. Capteur de pression a coupole jetable
WO2002003854A2 (fr) * 2000-07-08 2002-01-17 Mhm Harzbecher Medizintechnik Gmbh Elements de systeme pour mesurer la pression dans des cycles extracorporels
US20030200812A1 (en) * 2002-04-30 2003-10-30 David Kuhn Apparatus and method for sealing pressure sensor membranes
US20040135666A1 (en) * 2003-01-09 2004-07-15 Kurtz Anthony D. Pressure sensor header having an integrated isolation diaphragm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020020480A1 (fr) 2018-07-27 2020-01-30 EMKA Medical GmbH Dispositif de détection de pression pour application médicale in vivo
WO2025191048A1 (fr) 2024-03-12 2025-09-18 EMKA Medical GmbH Système et procédé de détermination et de surveillance de paramètres cardiologiques

Also Published As

Publication number Publication date
DE102008015322A1 (de) 2009-09-24
EP2252202B1 (fr) 2011-06-08
EP2252202A1 (fr) 2010-11-24
US8316706B2 (en) 2012-11-27
ATE511789T1 (de) 2011-06-15
US20110011176A1 (en) 2011-01-20

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